永磁体磁吸式排种器充种性能仿真与实验  

Simulation on Magnetic Precision Seed-metering Device

作　　者：胡建平[1] 王奇瑞[1] 邵秀平[1] 

机构地区：[1]江苏大学现代农业装备与技术省部共建教育部重点实验室,镇江212013

出　　处：《农业机械学报》2010年第12期35-38,34,共5页Transactions of the Chinese Society for Agricultural Machinery

基　　金："十一五"国家科技支撑计划资助项目(2006BAD11A10);江苏省自然科学基金资助项目(BK2007088)

摘　　要：以圆柱形永磁体为磁力排种元件设计了永磁体磁吸式精密排种器。对其充种过程进行分析,建立了充种动力学模型,并通过Matlab编程仿真分析了排种轮转速、充种角以及种子相对排种轮的摩擦因数对排种器充种率的影响,并确定了各参数的优化组合。仿真表明,充种率与排种轮转速、充种角以及种子相对排种轮的摩擦因数呈S型、指数型、对数型关系。在优化的参数组合下进行实验,其充种率可达97%。A kind of permanent magnetic precision seed-metering device was designed.The seeding component was a cylindrical permanent magnet.According to the working principles of the permanent magnetic precision seed-metering,the model of seeds pickup process was established.A Matlab program based on this model was made.The influences of angular velocity,pickup angle,and relative coefficient of friction on pickup ratio were simulated and analyzed.Combination of optimal parameters was found.The relationship between pickup ratio and angular velocity,pickup angle,relative coefficient of friction were S type,exponential type and log-linear type.With the combination of optimal parameters,the pass percentage of seeding could reach to 97%.

关 键 词：磁吸式排种器 充种 永磁体 动力学模型 性能仿真 实验 

分 类 号：S223.25[农业科学—农业机械化工程]